add docstring

modneflib/modnef/arch_builder/__init__.py

.../modnef/arch_builder/__pycache__/__init__.cpython-310.pyc

...f/arch_builder/__pycache__/modnef_builder.cpython-310.pyc

modneflib/modnef/arch_builder/modnef_builder.py

modneflib/modnef/arch_builder/modules/BLIF/__init__.py

...builder/modules/BLIF/__pycache__/__init__.cpython-310.pyc

...rch_builder/modules/BLIF/__pycache__/blif.cpython-310.pyc

...er/modules/BLIF/__pycache__/blif_debugger.cpython-310.pyc

...ch_builder/modules/BLIF/__pycache__/rblif.cpython-310.pyc

modneflib/modnef/arch_builder/modules/BLIF/blif.py

modneflib/modnef/arch_builder/modules/BLIF/blif_debugger.py

modneflib/modnef/arch_builder/modules/BLIF/rblif.py

modneflib/modnef/arch_builder/modules/Debugger/__init__.py

...der/modules/Debugger/__pycache__/__init__.cpython-310.pyc

...uilder/modules/Debugger/__pycache__/probe.cpython-310.pyc

modneflib/modnef/arch_builder/modules/Debugger/probe.py

modneflib/modnef/arch_builder/modules/SLIF/__init__.py

...builder/modules/SLIF/__pycache__/__init__.cpython-310.pyc

...ch_builder/modules/SLIF/__pycache__/rslif.cpython-310.pyc

...rch_builder/modules/SLIF/__pycache__/slif.cpython-310.pyc